If it's a method that a beginner uses, it's a "beginner's method". Not sure why you're so insistent that beginner's method must be a very specific thing when there are many, many tutorials that teach many, many variations of the basic layer by layer method.
(And for the record, even when I was using a terrible completely non-fingertrickable cube, I still did use slice moves sometimes. (Executed as two normal moves, of course.) Sometimes slice moves are just the most intuitive way to solve something, like inserting a missing edge piece into the first layer.)